Reentry is the chief mechanism in most cases of ventricular tachycardia with organic heart disease.

器质性室性心动过速绝大多数是折返性机制。

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It can happen in healthy people, more frequent in organic heart disease, and congestive heart failure patients.

它可以发生在健康人群，更常发生在有器质性心脏病和充血性心力衰竭的患者人群。

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Although the diagnostic yield is only 5%, if the ECG is normal, ischemia, arrhythmias, and organic heart disease are very unlikely.

虽然阳性诊断率仅5%，只要ECG正常，也基本能排除心肌局部缺血、心率不齐和器质性心脏病。

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But a framework in which to understand it is that pro-slavery ideology was, at its heart, a kind of deeply conservative, organic worldview.

支撑奴隶制度思想体系的框架,若要去理解这副框架的话,其核心,是某种极度传统,接近自然的世界观

耶鲁公开课 - 美国内战与重建课程节选

Organic polymers are a fundamentally new way of converting electricity to light, a process at the heart of all displays--TVs, computer monitors, cell phone screens.

FORBES: Seeing the Light